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/*
* Copyright (C) 2016 by Daniel Friesel
*
* License: You may use, redistribute and/or modify this file under the terms
* of either:
* * The GNU LGPL v3 (see COPYING and COPYING.LESSER), or
* * The 3-clause BSD License (see COPYING.BSD)
*
*/
#ifndef HAMMING_H_
#define HAMMING_H_
#include <avr/pgmspace.h>
enum HammingResult : uint8_t {
NO_ERROR = 0,
ERROR_IN_PARITY = 0xfe,
UNCORRECTABLE = 0xff,
};
const uint8_t hammingParityLow[] PROGMEM =
{ 0, 3, 5, 6, 6, 5, 3, 0, 7, 4, 2, 1, 1, 2, 4, 7 };
const uint8_t hammingParityHigh[] PROGMEM =
{ 0, 9, 10, 3, 11, 2, 1, 8, 12, 5, 6, 15, 7, 14, 13, 4 };
const uint8_t PROGMEM hammingParityCheck[] = {
NO_ERROR,
ERROR_IN_PARITY,
ERROR_IN_PARITY,
0x01,
ERROR_IN_PARITY,
0x02,
0x04,
0x08,
ERROR_IN_PARITY,
0x10,
0x20,
0x40,
0x80,
UNCORRECTABLE,
UNCORRECTABLE,
UNCORRECTABLE
};
#endif /* HAMMING_H_ */
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